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Re: XCode 2.4 and 32/64-bit universal binaries
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Re: XCode 2.4 and 32/64-bit universal binaries


  • Subject: Re: XCode 2.4 and 32/64-bit universal binaries
  • From: Rustam Muginov <email@hidden>
  • Date: Thu, 17 Aug 2006 17:45:49 +0400

Floating-point registers are the same size despite of CPU is 32-bit or 64-bit.
Even ancient 8087 FPU had 80-bit floating-point registers, although 8086 was a 16-bit CPU


It is integer calculation which could benefit from 32-bit to 64-bit transition.

--
Sincerely,
	Rustam Muginov

On Aug 17, 2006, at 5:36 PM, Artemiy Pavlov wrote:

Hello Marc, and thanks for your reply!

Well, there may be something I do not understand.

As I know, if I have a double float number, it will take two memory registers for a 32-bit CPU to calculate and 1 register on a 64-bit. Does this mean that my app will run faster on a 64-bit CPU, and do I have to compile it for a 64-bit CPU target or the 32-bit one will work like this too?

Sorry if I wrote some rubbish ;-)


Artemiy.

On 17 Aug 2006, at 1:55 PM, Marc Van Olmen wrote:

The 64 bit support in Tiger is limited, you can't call coreAudio API's from a 64-bit app in Tiger.
The applications you can build are purely Unix apps (cmd line tools/daemons)


At least that's what I understood from the info available online and the new info about Leopard.

cheers

marc

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  • Follow-Ups:
    • Re: XCode 2.4 and 32/64-bit universal binaries
      • From: Artemiy Pavlov <email@hidden>
References: 
 >XCode 2.4 and 32/64-bit universal binaries (From: Artemiy Pavlov <email@hidden>)
 >Re: XCode 2.4 and 32/64-bit universal binaries (From: Marc Van Olmen <email@hidden>)
 >Re: XCode 2.4 and 32/64-bit universal binaries (From: Artemiy Pavlov <email@hidden>)

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